Graphophone.



No. 680,339. Patent ed Aug. 13, 1901.

T. H. MACDONALD.

GRAPHOPHONE.

(Application med Nov. 22, 1 897.

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194: "cams PETERS 9o. PNpTO-LIT No. 680,339. Patented Aug. l3, I90l. T.H.- MACDONALD.

GRAPHOPHONE.

(Application filed Nov. 22, 1897.)

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. have devised certain improvements in the arpinion 2,, gear j, andpinion k. to the shaft of 1 the latter, which passes through plate A"and carries on the opposite side thereof. a .spur- 5 gear l and a pulleyF. The latter is connected by a belt G with a larger pulley H on themandrel-shaft. Gear Z engages a pinion .with the accompanying drawings,in which- UNITED STATES P TENT FFICE.

THE AMERICAN GRAPHOPHONE COMPANY, OF WEST VIRGINIA.

GRAPHOPHONE.

SIfEOIFICA'IION forming part of Letters Patent No. 680,339, dated August13, 1901. Application filed November 22,1897. Serial'll'o. 659,407.(Remodel) To all whom it mrtfly concern:

Beitknowntl1atI,THOMAS HMAcDoNALp, of Bridgeport, Connecticut, haveinvented new and useful Improvements in Graphophones; which improvementsare fully set .forth in the-following specification.

The object of the present invention '-is to produce a graphophone whichwhile capable of giving results as good as formerly in the reproductionof musical and othersound records shall yet be light, small, com pact,and of economical construction. To that end I rangements of the motor,feed mechanism, reproducer-carriage, and other parts which can be mostconveniently explained in connection Figure 1 is a plan view of agraphophone and its driving mechanism constructed in-ac cordance with myinvention. Fig. 2is a vertical cross-section and side elevation.

The frame of the machine consists, mainly, of three upright plates A A Aall mounted on bed-plate B. Plates A A have forward projections, betweenwhich is a iube a, which constitutes a long bearing for themandrelshaft, the mandrel 0 being unsupported at its other end. Theseplates also constitute the bearin gs for the spindles of thespringmotor, whose gears are between said plates. The three plates areheld together at the top by a front tie-rod b and a rear tie-rod b,which" rods also constitute the guides or ways upon whichthereproducer-carriage slides, as will behereinafter described. Aboutmidway between these two rods is the feed-screw -D,, which is journaledin the end plates A A and passes loosely through the intermediate plateA. h

E represents the barrel of the'spring-motor. It carries a large gear 2,which drives a pin ion f. On the same shaft with the latter is aspur-gear g, which drives a pinion h on the feed-screw shaft. Motion iscommunicated from gear- 9 to the mandrelQ through the tie-rods b b.

m on the rotating sleeve of the friction-gov ernor, which is preferablyof" the type described in my Patent No. 587,265, dated July 27; 1897.

Foroperating the cenarifugal governor as a brake, and alsoaspee ingspeeds, a leverK is pivoted on a projec:

tionof plate A ,and'carries at'one enda leather stud 0, adapted to makecontact with the rotatory friction-disk- L. The outer face of this leverK is incli ed somewhatoutwardly, away from the plate A, providing aslight cam-surface. An a'djusting screw M determines the normalpoisition of, the lever. A11 arm N, pivoted at 'n to plate A and whoserear projection n bears on lever K, serves in one position to press stud0 forcibly against disk L by means of the ca m-surface on lever K, andso arrestthe motor, andiu the other position to throw lever K intocontact with adjusting-screw M. p P represents the carriage for thesound re- -regulator for varyproducer or recorder T, mounted to slide onIt has a saddle formed of two curved plates 10 10 in which rests a hornQ, attached thereto by prolongations of one.

of these plates, as p, which constitute springclips (1 q, or by othersuitable attaching or clamping means. Lugs 19 on horn Q, engage platepand keep the horn from slipping. The" hollow socketR, to which therecorder or reproducer is connected in the well-known way, is pivoted-bypin 1' directly in the small endof .the horn. Beneath carriage P andpivoted on rod b is a lever S, carrying a sectioniofa nut s, whichnormally engages feedscrewD', being pressed into engagement-there withby a light helical spring 8. Socket R has a bent metal plate 1*, thelower end of which is just above the end of -le ver S, the upper end 1constituting'a finge piece. By

pressing on this'fi-nger-piece socket R is tilted on its pivot, thusraising the recorder (or reprodncer) from the tablet, and the samemovementplate r depresses the' eiid of lever '8, thus lifting the nutsfrom eugagement with the feed-screw.

Having thus fully described my invention,

,what Igclaim as new,'and desire .to secure by Letters Patent, is

1. In agrapho'phone the combinationof a base, two upright plates securedthereto,a'

in otor-spring between said plates and-havi'n g its shaft journaled insaid plates, a feed-screw journaled in one of said plates and in a thirdplate, a carriage actuated by said screw, a sound-conveyer supported bysaid carriage but removable therefrom, a recorder or reproducersupported by said sound-conveyer, a suitable gearing between themotor-shaft and the mandrel-shaft and between the motor-shaft and thefeed-screw, substantially as v described.

2. In a graphophone, the comlrination' of a a by said carriage and'arecorder or reprodncer reproduccr loosely mounted in and supported bythe small end 'of the born.

6. In a graphophone the combination with the feed-screw, of acarriag'e,a horn sup ported thereby, and a hollow socket for attachment of therecorder or reprodncer supported vin lhe'sniall end of said horn,substantially as described. 4

7 The combination with the feed-screw, of a-slidingcarriage adaptedto'be driven by said feed-screw, a horn supported by said .carriage, anda hollow socket'swiveled inthe small end of said horn and provided withmeans for attachment of a recorder orreprodncer, substantially asdescribed.

8, The combination with thecarriage, and means for'moving the same, of asaddle on said carriage, a'horn provided at its small end with a socketattachment for the recorder or reproducer, and means for attaching saidhorn to said saddle, substantially as described.

9. The combination with the feed-screw, of Q the carriage, the hornsupported thereby, the nut for engagement with said screw movablysupported by said carriage, the socket sW-iveled in the end of saidhorn, andconnections between the socket and nut,-whereby the tiltingof'the former moves the latter into or out of engagement with thefeed-screw, substantially-as described.

10. The combination with the feed-screw, of the carriage, the hornsupported thereby, the nut for emgagging said screw, a lever pivoted onsaid carriage and connected with said .nut the socket swiveled in theend of said horn, and a platoon said socket engaging said lever,substantiallyas described.

11. In a talking-machine, thecombination with a motor and its train'ofgears supported by and between two bearing-plates, of a feedscrew thatpropels the carriage for a recorder or reproducer,a governor locatedbelow the v said feed-screw, and a mandrel supported at one end fromsaid bearingplates and located in front of said feed-screwand governor,the said feedscrew, governor, and. mandrel be ing so arranged relativeto each other and to thedriving-gears, that motion is imparted to eachof them from opposite sides of a com mon' driving-gear.

12. In a talking-machi ie, the combination of a recorderor reproducersupportedby a' sound-conveyor, said sonnd-conveyer being both supportedand moved longitudinally by a carriage, and saidcarri'age in combinationwith a mandrel and means for revolving said mandrel While moy-i'ng saidcarriage longitudinally, substantially as described.

In testimonyfwhereof I have signed this specification inthe presence oftwo subscribing' witnesses. I THOMAS H. MACDONALD.

\Vitnesses:

WM. IRELAND STAN, A. P. KEOUGH.

